Used 942 SQ Ft 316L Stainless Steel Vertical Shell and Tube Heat Exchanger. Mfg Puget Equipment Co.(Div of JBL International). 316L SS Shell rated 15PSI@450F. (200) .75"OD 316L SS Tubes Rated 15PSI@450F. (4) Lug mounted. Serial #98301. National board #4385. built 1998. Weight 4000 lbs